How many liters of olive oil did the average ancient Roman consume per year?
Representative of Rome's enormous import system is the artificial mound of Monte Testaccio, measuring 35-meters high by several hundred meters long. Dating from the Roman Empire, it is composed of 53-million discarded olive oil amphorae, the equivalent of about 6-billion litres of oil. The empty vessels were probably carried up the mound intact, then broken and positioned into a stable pattern. Lime sprinkled on the terraces neutralized any rancid smell.